★【Multi-function】This bike seat tube lifting seat tube adopts oil pressure system, not simple air pressure, but also the hydraulic internal air. The lubricity is much higher than the air pressure. The lifting seat tube adopts a suspension seat rod, which is completely unaffected by the side. With compression and rebound damping, riding is easier.
★【Professional Design】The seat post adopts double-nail rear-floating design, and both screws are locked with 10.9-level torsion screws, more stable. With sealing design, sealing ring design, rainproof, dustproof, protect the seatpost, and no leakage oil.
★【2 Types for choice】2 different type for you to choose, such as 30.9mm/1.2in, 31.6mm/1.2in, which can meet your different needs. It's wonderful accessory for mountain bike, road bike, etc.
★【Premium Material】The Bicycle Seatpost made by high quality 7075 aluminum alloy, which is wear resistance and light weight, anti-corrosion and sturdy. It's durable to use and can maintain a long service life.
★【Easy to Use】The bottom fine adjustment screw is displayed at the bottom, which has been adjusted without adjustment.
